Question to the Department of Health and Social Care:

To ask the Secretary of State for Health and Social Care, pursuant to the Answer of 24 April 2023 to Question 181817 on Air Pollution: Death, if he provide a worked calculation and weblinks to references of how the number of deaths in Greater London attributable to fine particulate matter (PM2.5) was calculated from the fraction of mortality in (a) 2018, (b) 2019, (c) 2020 and (d) 2021.

We do not have the information in the format requested. UK Health Security Agency has not calculated the number of deaths attributable to fine particulate matter (PM_2.5) for the years requested. The following table shows the fraction of mortality attributable to particulate air pollution, measured as PM_2.5, for Greater London in 2018, 2019, 2020 and 2021. The provided values represent the percentage of annual deaths from all causes in those aged 30 years old and older. Estimates are currently available until 2021.

An estimate of deaths attributable to long-term exposure to air pollution in a local area can be made by multiplying the above attributable fraction by the total number of deaths annually in the local area. This represents the effect of air pollution across the whole population, as air pollution is considered to act as a contributory factor to many more individual deaths.